Display rack



FIG. 1 is a top, front, and left side perspective view of a display rack showing my new design;

FIG. 2 is an enlarged top plan view thereof;

FIG. 3 is an enlarged left side elevation view thereof, the right side being a mirror image of that shown;

FIG. 4 is an enlarged front elevation thereof;

FIG. 5 is an enlarged rear elevation thereof; and,

FIG. 6 is an enlarged bottom plan view thereof. 

The ornamental design for a display rack, as shown and described. 